Spraying apparatus with pump and motor adjustment



y 1967 R. A. PETERSON ETAL 3,320,895

SPRAYING APPARATUS WITH PUMP AND MOTOR ADJUSTMENT 2 Sheets-Sheet 1 FiledJan. 14, 1965 INVENTOR on m R n %m K E W0 N .u R m m D Rm T A A n RY B?May 23,

R- A. PETERSON ETAL SPRAYING APPARATUS WITH PUMP AND MOTOR ADJUSTMENTFiled Jan 14, 1965 2 Sheets-Sheet 2 RICHARD A. PETERSON BY and GARLANDR.

PETERSON ATTORNEYS United States Patent 3,320,895 SPRAYING APPARATUSWITH PUMP AND MOTOR ADJUSTMENT Richard A. Peterson and Garland R.Peterson, both of 3316 Denver, Muskogee, Okla. 74401 Filed Jan. 14,1965, Ser. No. 425,477 2 Claims. (Cl. 103-57) This invention relates tospraying apparatus and more particularly to versatile high pressureportable spraying apparatus of simplified construction.

The principal objects of the present invention are: to provide sprayingapparatus which is easily transported from place to place and highlyadaptable for various jobs; to provide such apparatus which includes apositive displacement pump for producing the high pressures, desirableto spray fence rows, trees, cattle and the like but is easily adjustableto lower pressure operation; to provide such apparatus which mayselectively spray liquids contained in a tank forming part of theapparatus or spray liquids obtained directly from a pond or the likethrough use of an auxiliary suction hose; to provide such apparatuswherein an auxiliary suction hose may be alternately or simultaneouslyused for spraying and filling the storage tank forming a portion of theapparatus; to provide such apparatus wherein relatively constantpressure is provided at the spray nozzle under varying nozzle flowrates; to provide such apparatus wherein pump output in excess of nozzlehow is automatically returned or directed to the storage tank whereuponthe contents of the tank are maintained in constant agitation; toprovide such a device using a small internal combustion engine fordriving the pump and wherein the engine is easily disengaged from thepump when desired by displacing a simple control lever; to provide suchapparatus wherein the internal combustion engine may be started withoutload and the pump disengaged when not needed; to provide such apparatushaving an auxiliary suction line connection which may be convenientlyused to direct oil into the pump for storage purposes; and to providesuch apparatus which is simple in construction and yet highly rugged inuse.

Other objects and advantages of this invention will become apparent fromthe following description taken in connection with the accompanyingdrawings wherein are set forth by way of illustration and examplecertain embodiments of this invention.

FIG. 1 is a perspective view of spraying apparatus embodying thisinvention and showing an auxiliary suction line for connection thereto.

FIG. 2 is a fragmentary end elevation of the apparatus showing theinternal combustion engine in pump driving position.

FIG. 3 is a fragmentary end elevation showing the internal combustionengine displaced toward the pump in non-driving position.

FIG. 4 is a fragmentary side elevation of the apparatus with portionsbroken away showing liquid by-passed into the tank.

Referring to the drawings in more detail:

The reference numeral 1 generally indicates portable high pressure sprayapparatus embodying this invention. The apparatus 1 comprises anelongated rigid angle iron frame 2, a storage tank 3 and a positivedisplacement pump '4, preferably of the gear lobe type. The tank 3 issecured to the frame 2 by means of suitable straps 5 welded respectivelyat one end to the frame at 6 and terminating at the other end in athreaded stud 7. The studs 7 extend above the upper wall 8 of the tank 3and a bar 9 receives the studs whereupon nuts 10 are threaded thereontofor rigidly anchoring the tank 3 with respect to the frame. A bung 11 isprovided in the upper wall 3,320,895 Patented May 23, 1967 8 of the tank3 for filling the tank by any conventional means is desired. Suitablehandles 12 are fixed to the sides of the frame 2 in spaced apartrelation for manually carrying the apparatus 1 from place to place whennecessary.

The frame 2 includes longitudinally extending spaced apart parallel sideangles 16 having lower legs 14 extending toward each other and upperlegs 15 extending upwardly for receiving the straps 5 and handles 12..Transversely extending spaced apart angles 16 and 17 are secured atopposite ends thereof to opposite ends of the longitudinal angles 13producing a rectangular structure. However, the angle 17 has the outerleg 18 thereof facing upwardly to form a pocket with the angles13 and 14for receiving the tank 3 and the opposite transverse angle 16 has theouter leg 19 thereof facing downwardly for reasons apparent hereinafter.A transverse angle 28 is secured at opposite ends thereof to andintermediate the ends of the longitudinal angles 13 and 14 and extendsparallel to the transverse angle 16. The upper leg 21 of the anglepoints toward the angle 16 and the lower leg 22 extends downwardlyparallel to the leg 19 of the angle 16.

Angles 23 and 24 are respectively secured, preferably by welding, to theangles 16 and 20 and have horizontal upper legs 25 and 26 extendingtoward each other and spaced slightly above the horizontal upper leg 27of the angle 16 and the horizontal upper leg 21 of the angle 20. Thepair of angles 23 and 16 and the pair of angles 24 and 20, respectively,form guide means or grooves 28 and 29 opening toward the opposite pairof angles. A mounting plate 30 has opposite side edge portions 31 and.32 engaged in the respective grooves 28 and 29 for sliding transverselyof the frame 2. A portable internal combustion engine 33 is suitablyfixed to the plate 30 and has an output pulley 34 aligned. with andspaced laterally from the input pulley 35 of the pump 4.

The pump 4 is rigidly mounted on the frame 2 by means of a brace 36suitably fixed to the angle 24. A pulley guard 37 partially surroundsthe: pump pulley 35 and is maintained in position by brackets 38 alsosecured to the angle 24. A flexible power transmission belt 39 isengaged with the pulleys 34 and 35 for selectively transmitting motiontherebetween.

A pair of bearing members 44} and 41 are coaxially alignedlongitudinally of the frame 2 and are secured by mounting on the angles16 and 2%, respectively, adjacent one end of the grooves 28 and 29. Anaxle member 42 is rotatably mounted at opposite ends thereof in thebearing members and 41 and has a pair of parallel spaced apart radiallyextending lever arms 43 and 44 fixed thereto. A pair of anchor members45 and 46 are fixed to the plate 30 and are respectively aligned withthe lever arms 43 and 44. A pair of elongated rigid links 47 and 48 arepivotally connected at opposite ends thereof to the respective alignedanchor members and lever arms whereby rotation of the axle member 42produces movement of the plate 30 thereby varying the distance betweenthe pulleys 34 and 35 resulting in a loosening or tightening of the belt39. The links 47 and 48 include internally threaded sockets 49 andthreaded rods 50 engaging in the respective sockets for adjusting thedistance between the ends thereof so as to compensate for variations inthe length of the belt 39.

An elongated stop member 51 extends between the angles 16 and 2t and ispositioned to engage the lever arms 43 and 44 to prevent furtherrotation of the axle member 42 in one direction beyond a few degreespast the point of maximum separation between the mounting plate and theaxle member. Thus a toggle is formed whereby the plate 31 is lockedagainst motion toward the axle member 42 until the axle member isrotated past top 3 dead center in the opposite direction. A lever member51' is fixed to the axle member 42 and extends radially therefrom forselectively rotating the axle member into and out of the lockedposition.

The pump 4 has an inlet port 52 and an outlet port 53. A suction filter54 is located in the storage tank 3 and resting on the bottom wall 55thereof. An elongated suction tube 56 extends through a side wall 57 ofthe tank 3 and communicates at one end thereof with the filter 54 and atthe other end thereof with the inlet port 52 of the pump 4. The suctiontube 56 has an intermediate portion 58 including a normally sealedintake connector 59 for selectively attaching to an auxiliary suctionline 68. A valve 61 in the suction tube 56 between the connector 59 andthe filter 54 may be closed to selectively prevent intake into the line56 from the tank 3.

A spray nozzle member 62 has a trigger mechanism 63 for selectivelycontrolling the flow therethrough. An outlet tube 64 is connectedbetween the pump outlet port 53 and the spray nozzle member 62. Aby-pass connector 65 communicates into the outlet tube 64 and has apressure sensitive by-pass valve 66 adapted to open above apredetermined pressure to maintain a selected pressure in the outlettube 64 during pump operation. A by-pass tube 67 is connected betweenthe valve 66 and the tank 3 through the wall 57 for re-circulatingliquid passing through the valve. The tube 67 opens through the wall 57well above the bottom wall 55 so as to produce maximum agitation in thetank with the by-passed liquid.

In operation, the apparatus 1 may be transported to the desired site ina truck or the like and easily handled, if necessary, by the handles 12.In order to spray insecticides or the like, the proper liquids may bepoured into the tank 3 through the bung 11. The mounting plate 30 isdisplaced toward the axle member 42 by rotating the lever member 51clockwise to the position illustrated in FIG. 3 whereupon the belt 39 isslack. In this position the engine can be started without load. When thespray nozzle member is ready for spraying, the lever member 51' isrotated counterclockwise to the position illustrated in FIG. 2 whichtightens the belt 39 so as to drive the pulley 35 from the engine pulley34. The valve 61 is opened and the liquid in the tank 3 is pulled orsucked into the pump 4 and discharged into the outlet tube 64. When apredetermined pressure is reached in the outlet tube 64, the by-passvalve 66 opens and the liquid returns to the tank through the by-passtubes 67. Upon pressing the trigger mechanism 63, a large portion of theoutput of the pump 4 is discharged through the spray nozzle member 62.However, it is usually desirable to maintain the output of the pump 4above that which can be discharged through spray nozzle member 62 sothat a substantially constant pressure is always maintained in theoutlet tube 64 and also so that there will always be some circulatingflow in the tank 3 to maintain the contents under constant agitation. Asuitable adjusting screw member 68 is provided on the by-pa-ss valve 66by which the discharge pressure in the outlet tube 64 can be easilyregulated. If desired, an additional outlet tube (not shown) may bebranched from the outlet tube 64 whereupon spraying from separate pointsmay be simultaneously accomplished so long as maximum output capacity ofthe pump 4 is not exceeded.

It is sometimes desirable to use a pond or other reservoir as a directsource of the liquid being sprayed rather than the tank 3. Under thesecircumstances, the auxiliary suction line 60 is connected to the intakeconnection at 59, for example, by a quick disconnect coupler 69 and thevalve 61 is closed whereupon all intake to the pump 4 enters through theline 60 instead of the tank 3. By-pass flow will enter into the tank 3.It is noted that this also presents a convenient method of filling thetank 3, that is, by preventing flow through the outlet tube 64, all flowfrom the line 60 is by-passed into the tank. It may be desirable toleave the valve 61 partially or wholly open with the auxiliary suctionline 60 connected whereupon intake to the pump may enter from either thetank or the line 60. Further, if desired, the tank 3 may be emptied byopening the valve 61, stopping the pump 4 and lowering the free end (notshown) of the line 60 whereupon flow will reverse and discharge throughthe line 60. The connection at 59 also provides a convenient access intothe pump to insert oil or other protective fluid for apparatus storage.

It is to be understood that although one form of this invention has beenillustrated and described, it is not to be limited to the specific formor arrangement of parts herein described and shown except insofar assuch limitations are included in the claims.

What we claim and desire to secure by Letters Patent is:

1. In portable pressure spray apparatus:

(a) a frame and a pump, means securing said pump to said frame, saidpump having a driving pulley,

(b) said frame including structure forming guide means, a mountingmember engaged with said guide means for moving with respect to saidframe, a prime mover fixed to said mounting member and having an outputpulley transversely aligned with and spaced from said pump pulley, aflexible power transmission belt engaging said pulley,

(0) means mounted between said mounting member and said frame forselectively moving said mounting member to produce movement of saidpulleys toward and away from each other resulting in a loosening andtightening respectively of said belt on said pulleys,

(d) said means for moving said mounting member including a pair ofcoaxially aligned bearing members extending longitudinally of said frameand secured to said frame in spaced apart relation respectively adjacentsaid guide means,

(e) an axle member rotatably mounted at opposite ends thereof in saidbearing members and having a pair of parallel spaced apart radiallyextending ing lever arms fixed thereto, means for rotating said axlemember,

(f) a pair of anchor members fixed to said mounting member andrespectively aligned with said lever arms, a pair of elongated rigidlinks pivotally connected at opposite ends thereof to said respectivealigned anchor members and lever arms whereby rotation of said axlemember produces movement of said mounting member, and

(g) a stop member secured to said frame and positioned to engage saidlever arms to prevent further rotation of said axle member in onedirection beyond a few degrees past the point of maximum separationbetween said plate and said axle member.

2. The structure as set forth in claim 1 wherein:

(a) said rigid links include internally threaded sockets and threadedrods engaging in said sockets for adjusting the distance between theends thereof.

References Cited by the Examiner UNITED STATES PATENTS 2,123,156 7/1938Jagoe 239-172 2,329,728 9/1943 Samiran 222-376 X 2,415,820 2/ 1947Herring 248-23 2,590,817 3/1952 Fenno 222-333 2,719,754 10/1955 Weller222-178 2,740,664 4/1956 Yates 239-172 2,980,295 4/1961 Sacco 222-14453,082,917 3/1963 Anderson et al 222-376 X ROBERT B. REEVES, PrimaryExaminer.

HADD S. LANE, Examiner.

1. IN PORTABLE PRESSURE SPRAY APPARATUS: (A) A FRAME AND A PUMP, MEANSSECURING SAID PUMP TO SAID FRAME, SAID PUMP HAVING A DRIVING PULLEY, (B)SAID FRAME INCLDING STRUCTURE FORMING GUIDE MEANS, A MOUNTING MEMBERENGAGED WITH SAID GUIDE MEANS FOR MOVING WITH RESPECT TO SAID FRAME, APRIME MOVER FIXED TO SAID MOUNTING MEMBER AND HAVING AN OUTPUT PULLEYTRANSVERSELY ALIGNED WITH AND SPACED FROM SAID PUMP PULLEY, A FLEXIBLEPOWER TRANSMISSION BELT ENGAGING SAID PULLEY, (C) MEANS MOUNTED BETWEENSAID MOUNTING MEMBER AND SAID FRAME FOR SELECTIVELY MOVING SAID MOUNTINGMEMBER TO PRODUCE MOVEMENT OF SAID PULLEYS TOWARD AND AWAY FROM EACHOTHER RESULTING IN A LOOSENIGN AND TIGHTENING RESPECTIVELY OF SAID BELTON SAID PULLEYS, (D) SAID MEANS FOR MOVING SAID MOUNTING MEMBERINCLUDING A PAIR OF COAXIALLY ALIGNED BEARING MEMBERS EXTENDINGLONGITUDINALLY OF SAID FRAME AND SECURED TO SAID FRAME IN SPACED APARTRELATION RESPECTIVELY ADJACENT SAID GUIDE MEANS, (E) AN AXLE MEMBERROTATABLY MOUNTED AT OPPOSITE ENDS THEREOF IN SAID BEARING MEMBERS ANDHAVING A PAIR OF PARALLEL SPACED APART RADIALLY EXTENDING ING LEVER ARMSFIXED THERETO, MEANS FOR ROTATING SAID AXLE MEMBER, (F) A PAIR OF ANCHORMEMBERS FIXED TO SAID MOUNTING MEMBER AND RESPECTIVELY ALIGNED WITH SAIDLEVER ARMS, A PAIR OF ELONGATED RIGID LINKS PIVOTALLY CONNECTED ATOPPOSITE ENDS THEREOF TO SAID RESPECTIVE ALIGNED ANCHOR MEMBERS ANDLEVER ARMS WHEREBY ROTATION OF SAID AXLE MEMBER PRODUCES MOVEMENT OFSAID MOUNTING MEMBER, AND (G) A STOP MEMBER SECURED TO SAID FRAME ANDPOSITIONED TO ENGAGE SAID LEVER ARMS TO PREVENT FURTHER ROTATION OF SAIDAXLE MEMBER IN ONE DIRECTION BEYOND A FEW DEGREES PAST THE POINT OFMAXIMUM SEPARATION BETWEEN SAID PLATE AND SAID AXLE MEMBER.